File-sharpening machine.



No'.s60-,1mA V f PATENTED JULY16,1907.5

. o.-M.EMERSQN.

PILE SHARPENING MACHINE.

nruouronunnnx z5. 190s.

4 J6 n Y /f 4 g E lll E CHARLES M. EMERSON,l OF COLUMBUS, OHIO.

FILE-SI-IARPEN'IN'G` AMACHINE.

Speciiication of Letters Patent.'

Patentea'ruiy'le, 19o?. l

Application ned May 25, y1906. serial No. 318,626.1

To ali whom. 'it may concern:

y Beit known that I, CHARLES M. EMERsom'a citizen A of the United States, residing at Columbus, in thel county 'of Franklin and vState o Ohio, have invented certain new and useful kIml'novenients in File-Sharpening Machines,` of which the following is a specification. My invention'- relates to file sharpening machines di the class whichfsharpen filesv by means of a sand blast. The efficiency 4of'machines oi' this character dependsl largely upon` the angle at which the blast is directed toward the le."V variation of a few degreesin the angle at which this blast is directed, will result' in stripping the .teeth from the file instead -of sharpening saidle. One of theobjects ofthe present invention, therefore, is to provide a nozzle supportingblock having channels formed therein adapted to conduct iiuid under pressure to said nozzles, said block having integrallugs cast -upon its face and at 'such an angle thereto that when the nozzles are secured to-said lugs, the blast I from said nozzles \wil1 bel'Qirec-ted at the proper angle vation partially in section oi a file sharpening machine constructed in accordancey with my invention, Fig. 2 is a front end elevation of said machine witha portion of. the sand and water box broken away, Fig. 3 isa detail view of the nozzle supporting block, and,` Fig. 4 is a Vdetail front'elevation of a modified form of'nozzle supporting block. p

Like numerals designate' corresponding parts all bf the figures of the drawing.

Referring to the drawing, the numerals 5 designate a pair of supporting standards, which together with horizontallydisposed crosp bars 6 form a framework for the support of a drum 7 This drum 7 provided with an exhaust pipe 8 for the escape ofthe steam from saidY drum and a dscharge'pipe 9 to permit the sand and water which has been d-ischarged into the drum Athrough the nozzles to return to the sand box as will be herein- `after described. As is best illustrated in Fig. l, the

drum 7 has its outer end elevated in order that the contents of the drum may more effectually ow to the discharge pipe 9. A damper 10 is located in the exhaust pipe 8 and is of the usualand Well known construction. Brackets 11 secured to the front of the drum supporting frame, support a sand and waiierbeir- 12. AA steam supply pipe 13 conducts'steamv through*A branch pipes 14 to a block 15. This bloclis best illustrated in Figs. 2 and 3 and by referring to`said'V figures, it will bessen that the block has an opening 16 formed entirely therethrough. The branch pipes v14:

Acommunicate-with channels 16 formed1 in the block` '15 and these channels in turn communicate with chan-- nels 17 which lie partly in the block andpartly in integral lugs 18 which lie at an angleto the face of the block. Female nipples 1 9 4are threaded upon these lugs. The reduced 'portions 20 Lof nipples'21 are"y threadedv into the nipples 19. The nozzles lproper 22 are threaded into the nipples 21. Pipes 23lead'irom the nipples21-to a block 24. This block 24 carries valves 25 adaptedito cut off or establlsh communica-v of` the sandand water box 12. Throttle valves 27 and 28 control the iow of steam to either of the pipes-14.

` Carried by' brackets 29 which are secured to the 'top of the drum 7 ,I are rollers 3Q between which a pipe lis mounted totravel. This pipe is connected by a coup- ,ling 32 to a downward extension 33. Secured to the' pipes 23 and 26, steam is admitted through the steam pipe 13 and branch pipes 14 to the nozzles. The rush of steam through the nozzles creates a vacuum in the pipes 23 and causes the sand and water contained in the box 12 to be drawn 11p through said pipes 23 and discharged from the nozzles along with the steam. The operator by grasping the extension 33 and shoving the parts connected thereto-bodily inward, causes the iile to pass through the opening 16 and block 15 and to travel between the nozzles, while the blast acts upon the file to sharpen the same, said blast being discharged tion between the pipes 23 and pipes 26-which lead from the' block 24 and terminate a little short oi the bottom -25 opened to establish communication between the J l to the interior of the drum 7 through an opeuing7 formed in front of said drum.

The adjustment of the nozzles to the proper angle has -proved a source of considerable Adifliculty in machines of this character and it is desirable that after this anglo has once been ascertained, that means should be provided for again finding said angle without dillculty. v

of two, by virtue of which construction ell of thesides of :t square le may besherpened simultaneously. The same reference numerals have been applied to these nozzles, the block and the steam supply pipes leading to seid block. It will be seen that ports 16 conduct steam from the nozzles which are supplied direct from the pipes 14, to the nozzles which are not so supplied.

From the foregoing description, it will be seen that simple and eiicient ine-ans are herein provided for eccomplshing theobjects of the invention, butwhile the elements shown and described ere well adapted to serve the purposesfor which they are intended, it is tol be understood thatthe invention is not limited to the precise construction set forth, but includes within its purview such changes as may be mede Within the scope ol" the appended claims.

What I claim, is: l

1. In a machineof the chracterdescribed, a nozzle supporting block having an opening formed entirely therethrough, angular-ly disposed lugs carried by one of-.the faces of said block, nozzles carried by 4said lugs, and means for supplying huid under pressure to said nozzles.

2. In a machine of the character described', a nozzle supporting block having an opening formed entireiy therel through, 'singularly disposedlugs carried by one of the feces of said block, nozzles carried by said lugs, means for supplying iiuid under pressure vto said nozzles, and means for supplying nn ubruding substance to said nozzles.

3. In a machine of the character set forth, the combination with a block having an opening formed entirely therethrough, of ungularly disposed lugs formed upon one. of the'faces of said block,v pipes entering n t the side of the block and 'communicating with channels formedin the block, said channels also communicatingY with channels formed in the lugs, nozzles carried by' said luge, means for supplying an abi'ading material to saldnozzles, and-means for supplying fluid under pressure to said pipes.

'4. 1n a. machine of the character set forth, the combination with a drum having anopening formed in one end thereof, of a block disposed-ln alinement with said opening, said block having an opening formed entirely therethrough, meansA for supportingl a file for' longitudinal movement through said opening, nozzlesdlsposed at an angle with relation to each other and carried upon the inner face of the-block,'. and means for. admitting duidv under pressure -from the side ofy said'blo'ckto said. nozzles.

In testimony vvhereof Iv ax my signature in. presence of two Witnesses.

CHARLns M. EMERSON.'

Witnesses:

FRANK G. CAMPBELL, All L. PHELPS.v 

